Missing COL payment after an appeal outcome

I can see an number of other threads about COL payments and a suggestion you can report a missing payment digitally.

Following a PIP appeal that has reinstated an award back prior to the qualifying date in 22 for the DCOL payment - I checked the award letter the DWP issued and there’s no reference.

When I check the report a missing payment link on gov.uk it no longer allows you to report it digitally (if it ever did - threads seem to suggest it did) but instead signposts you to the call the PIP helpline.

Is anyone aware of how this IS supposed to be handled currently? Are the appeals team who process the outcome supposed to consider it as part of their putting the payment back into place decisions?